Transmission-gear.



E. M. STERNBERG. TRANSMISSION GEAR.

APPLIcATIoN FILED Nov. ze, 1907.

Patented' 001;. 13,1908.

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UNTTED sTATns PATENT oFFIcE.

ERNST M. STERNBERG, OF MILWAUKEE, WISCONSIN.

TRANSMISSION-GEAR.

Y Specification of Letters-Patent.

Patented oct. V1e, 190s.

Application filed November 29, 1907. 'Sera1No. 404,315.

tails. of construction and combination of parts as hereinafter-fully set forth with reference to the accompanying drawing and subsequently claimed. Y

The drawing represents a plan view, partly in section, of a transmission-gear embodying the features of my invention. Y Referring by numerals to the drawing, indicates a power-shaft having friction cone- .wheels 2, 3, in spline-connection therewith,` a

third cone-wheel 3a being securedfto the shaft intermediate of the first Vnamed cones. The friction cones 3 and 3a are provided for transmitting forward; variable speed to transverse counter-shafts 4, 5, which shafts are axially alined with relation to each other, the cone 2 being utilized as a reverse drive for these two shafts. To the counter-shafts are secured oppositely disposed disks or wheels 6, 7, havingdouble beveled. faces of differential diametersfor frictional enragement with the several cones, the inner evel faces of the disks being arranged to contact with the friction cone 2, whereby increased speed is imparted to the counter-shafts from the power-shaft aforesaid. The countershaft 4 is mounted in bearings of a bracket or frame 8, as is also the power-shaft, thev shaft 5 being similarly mounted in bearings of this frame.

Revolubly supported in bearings of the F frame S is a hollow arbor 9, which arbor is sleevedovcr the counter-shaft 5 and is adapted to rotatein the op oslte direction therefrom. To the inner enf..L of the arbor 9 is secured a third disk 10 havin@` a bevel-face cured to a stud 14 that is fitted into bearings of the frame. The stud is longitudinally-adjustable through a screw 15, which screw is in threaded-engagement with a lug ofthe frame 8, and is adapted to abut the adjacent stud end. l

By means of-above mechanism the frictional contact-pressure of the cone 13 upon bevel-faces l1 and 12 of the disks are regulated in accordance with the power required.

The outer ends of arbor 9 and countershaft 4 are each provided with sprocketwheels, which may be employed 'to impart rotation directly to the axle of a vehicle, or to any source wherein it is essential that the directionof rotation be in same.

From the foregoing description it will be seen that motion imparted to the frictiondisks 6 and 7 from any one of the drivingcones will cause rotation of the countershafts y4 and 5 in opposite directions. The

motion of shaft 5 is, through its disk 7, transferred to the lcone 13, which cone in turn drives the disk 10 that is carried by the arbor. The arbor in conse uence will rotate in the Vsame direction as t e counter-shaft 4, and

thusproduce the desired direction of drive to the sprocket-wheel fast on said shaft and arbor, it being understood that said sprocketwheels are provided for the purpose of direct chain-belt connection to the driving-wheels of a motor-vehicle or any mechanism wherein rotation in the same direction of se arate members is desired. The cones 2 an 3 are provided with grooved collars for the rece tion of Spanner-levers 16 fulcrumed in tie frame, the levers being actuated to throw said cones` in and out of frictional-en agement with the disks, as well as to contro the driving-pressure required. This pressure is approximately double the pressure required to produce desired results in connection With the cone 18, for the reason that said cone, through its connections, is only required to drive one sprocket while the driving cones must have a pressure sufficient to sustain the entire load. Cone 3EL is thrown in and out of Yengagement with the adjacent bevel-faces of the disks by longitudinal adjustment of the power-shaft, which adjustment may be attained by any suitable mechanism forming no part of the invention. The driving-pressure of cone 13 against the adjacent bevelfaced disks, being slight in proportion to the pressure required for the power-shaft cones, permits the said cone 13 to slip at times when one of the counter-shafts is retarded, and thus act as a compensating gear When the device is used in connection With traction- Wheels of a vehicle. In some instances, beveled-toothed gear-Wheels may be substituted for the friction-wheels shown, in either case any Well known form of compensating gear-mechanism may be applied to the hub of the intermediate cone 13 or its substituted bevel-gear pinion.

I claim:

l. In a transmission-gear, a power-shaft, axially alined transverse counter-shafts disposed on opposite sides of the power-shaft, a gear-Wheel in connection with each countershaft, a driving gear-Wheel carried by the power-shaft for engagement with the countersha't gear-wheels, an arbor revolubly mounted about one of said counter-shafts, a gear- Wheel secured thereto, and an idle gear-wheel enga ing the arbor gear-wheel and gear- Whee of the aforesaid counter-shaft about which said arbor is mounted.

2. In a transmission-gear, a power-shaft, axially alined transverse counter-shafts disposed on opposite sides of the power-shaft, a

evel gear-Wheel in connection with each counter-shaft, a driving bevel gear-Wheel carried by the power-shaft for engagement with the counter-shaft bevel gear-Wheels, an arbor revolubly mounted about one of said countershafts, a bevel gear-Wheel secured thereto, and an idle bevel gear-Wheel engaging the arbor bevel gear-Wheel and bevel gear-Wheel of the aforesaid counter-shaft about which said arbor is mounted.

3. In a transmission-gear, a power-shaft, axially alined transverse counter-shafts disposed on opposite sides of the power-shaft, a iriction bevel-Wheel in connection with each counter-shaft, a friction cone-Wheel carried by the power-shaft, for engagement with friction bevel-Wheels of the counter-shafts,

an arbor revolubly mounted about one oll said counter-shafts, a friction bevel-wheel secured to the arbor, and an idle friction cone-wheel engaging the arbor friction bevel- Wheel and friction bevel-wheel of the aforesaid counter-shaiit about which said arbor is mounted.

4. In a transmission-gear, a power-shaft, axially alined transverse counter-shafts on opposite sides of the power-shaft, drivinggears connecting said power sha'l't and counter-shafts, an arbor revolubly mounted about one of the counter-shafts, a gear-wheel secured to the arbor and an idle gear-wheel in gear-connection with the arbor gear-wheel and driving-gear connection of the power and counter-shafts, the idle gear being capable of permitting dill'erential speed bet\\'een the arbor and opposite counter-shaft.

5. In a transmission-gear, a power-shaft, axially alined transverse counter-shafts on opposite sides of the power-shalt, a wheel secured to one of the counter-shafts, having a bevel 'face upon one side, a wheel secured to the other counter-shaft having bevel-'laces on opposite sides, cones carried by the powersha'lit for engagement with the adj arent bevel-faces of said eountcr-shai t wheels, an arbor revolubly mounted about that count ershaft having secured thereto the oppositely bevel-faced wheel, a bevel-faced wheel secured to the arbor, and an adjustable idle cone for engagement with the bevel-tace ol' the arbor wheel and adjacent bevel-.tace ol' the counter-shaft wheel.

In testimony that I claim the foregoingr flY have hereunto set my hand at Milwaukee in the county of Milwaukee and State o'l` Yisconsin in the presence of two witnesses.

E. M'. STERNBERG.

Vitnesses:

GEORGE FELBER, RALPH NELSON. 

